Improve change api (#628)

* fix: jsdoc comments

* more human casting of string values to boolean

* add coerceColour to get named colors to work

* cue can't pass isKeyOfType event check

* dont mutate value

* alloow cue in eventDef

* lint

* css named or hex formatting

* "sideEffects": false

* test colour hex regex

* roll eventDef back to master

* parse property

* don't export cssColour names

* remove import

* only allow string types to colour

* handle transparent colour

* mix alpha with bg colour

* only allow updating events

* descriptive names

* add test for getAccessibleColour

* readability

* move isColourHex to regex-utils

* simplify and add test

packages/utils/src/regex-utils/isColourHex.ts

@@ -0,0 +1,10 @@
+/**
+ * @description Validates a colour hex string
+ * @param {string} text - colour hex string "#FFF" | "#FFFF" | "#FFFFFF" | "#FFFFFFFF"
+ * @returns {boolean} string represents time
+ */
+export const isColourHex = (text: string): boolean => {
+  const regexS = /^#((?:[a-f\d]{1}){3,4})$/i;
+  const regexD = /^#((?:[a-f\d]{2}){3,4})$/i;
+  return regexS.test(text) || regexD.test(text);
+};